Drought recorded by Ba∕Ca in coastal benthic foraminifera

Brinkmann, Inda; Barras, Christine; Jilbert, Tom; Næraa, Tomas; Paul, K. Mareike; Schweizer, Magali; Filipsson, Helena L.

doi:https://doi.org/10.5194/bg-19-2523-2022

Articles | Volume 19, issue 9

https://doi.org/10.5194/bg-19-2523-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-19-2523-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 9

Research article

|

16 May 2022

Research article |

| 16 May 2022

Drought recorded by Ba∕Ca in coastal benthic foraminifera

Inda Brinkmann, Christine Barras, Tom Jilbert, Tomas Næraa, K. Mareike Paul, Magali Schweizer, and Helena L. Filipsson

Supplement

https://doi.org/10.5194/bg-19-2523-2022-supplement

Data sets

Trace-elemental data (Ba/Ca) of benthic foraminifers from core-top sediments of Gullmar Fjord, Swedish West coast Inda Brinkmann https://doi.org/10.5878/eb67-9v72

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Short summary

The concentration of the trace metal barium (Ba) in coastal seawater is a function of continental input, such as riverine discharge. Our geochemical records of the severely hot and dry year 2018, and following wet year 2019, reveal that prolonged drought imprints with exceptionally low Ba concentrations in benthic foraminiferal calcium carbonates of coastal sediments. This highlights the potential of benthic Ba / Ca to trace past climate extremes and variability in coastal marine records.